Spindle step-bearing.



D. N. WILD;

SPINDLE STEP BEARING.

APPLoATIoN MLBD JUNE 2s, 190g.

mente@ Det, 11,1%@

lllllpl UTED STATE@ ATE Fl@ DANIEL N. WILll/OF CEDAR FALLS, IOWA.

SPXNDLE STEP-BEARING.

Specification of Letters Patent,

Application tiled June 28, 1909.

Serial No. 504,883.

To all whom it 1mg concern: Be it known that I, DANIEL N. lViLn, a

' citizen of the United States of America, and

a resident of Cedar Falls, Blackhawk county, iowa, have invented certain new and useful improvements in Spindle Step-Bearings, of which the followingis a specification.

My invention relates to improvements in spindle step-bearings, and more specilically to bearings for the rotar@7 spindles of centrifugal cream separator bowls, and the object ol my improvement is to provide an improved resilient' anti-friction step-bearing for that purpose. complished by the means whichv are hereinafter fully described and claimed, and which are `illustrated in the accompanying drawings, in which:

Figure 1 is a central vertical section ot the bushings ot my improv-ed bearing, showing the included resiliently'supported and anti-friction means for receiving the toot ot' a spindle. Fig. 2 is a detail view of one of the spindle-supports showing it formed with arslightly variant means of connection with the spindle-foot.

Similar numerals referto similar parts throughout the several views.

rilhe outer hollow cylindrical bushing 12 of my improved bearing is exteriorly threaded near its top, whereby it may be secured `in the :trame of a centrifugal machine. A hollow cylindrical nut 1G is seated in the open top ot the bushing 12, and a hollow nut 1G seated in the open bottom ot said bushing'. rlhe inner bore ot the nut 10 receives the spindle 1, the upper part of said nut being expanded to form'` an oil-cnp 2. The nut 16 is adjustablevertically within the threaded lower end of the bushing `12, and has its base-contracted and furnished I with a drainage port 18 of small diameter.

Within the bore of said bushing 12, and resting upon the top of the basenut 16 "is a cylindrical sleeve 11i whose axial bore is` slightly Wider than the diameter of thelower contracted VYend of the spindle-support 11.

which passes through it. The lower end of the support 11 is further diminished and threaded to receive a washer which bears This object l have ac,

spring` T whose ends are seated in cup-shaped hollows in. the adjacent ends ot said sleeves. The inner bore of the sleeve 18 is also slightly wider than the diameter of the received spindle-support 11. 'The upper end of the sleeve 13 has an axial convex seat or roll-way for a plurality of anti-friction balls 5 between which the body of the support 11 is received and engaged, while the support 11 is curved outward above and contacting with said balls to permit the expansion 4 to rest thereon and rotate thcreover. The upper end of the support-expansion 4l has an axial`boss 3 of the form of a frust'um with grooved surface, and said frustum 3 is adapted to be received 'into an axial cavityor seat in the lower end of the spindle 1, the corrugations in ,said frustum serving to frictionally engage'v the walls of said seat to hold thein together so that they may rotate as one. In Fig. 2' l have shown a slightly varied pattern of spinlle-support, which. however, has in the top of its expansion l an axial cavity or seat 3l adapted to receive a boss on the end of a spindle supported thereon, and the walls of said cavity 3 are grooved to effect a frictional hold upon the spindleboss.

It will be observed that the inner wall ot'- the holloivdmshing 12 is vertically grooved at 17, this groove 1T being adapted to receive and be a slideway for the heads of the screws 6 in thc sleeve 13, and 8 in tho sleeve 14, and serve to prevent the rota tion in said bushingof said sleeves, which might. otherwise be caused by the moving parts above the sleeves.

Among the useful features of my improved s )indle-bcaring are these. .The vertical adjustment of the base-nut 1G to take kup space occasioned by frictional wear upon the bearing-surface of the sleeve 13; yieldable resilient support to the spindle afforded by the seating of the spring 7 With its ends in engagement with the cupped adjacent ends of said sleeves; the improved spindlesupport 11 Wit-h its expansionl carried on the anti-friction means 5 in the yieldable raceway of the sleeve 13, and the improved means of connection between the end of the spindle 1 and the spindle-support 11. These taken together, furnish a spindle. supporting-means which is very elficient in steadying and supporting the spindle and its rapidly rotating superincumbent extensions.

The washer 15 also, by reason of its en- Patented Oct. 11, 1910. i

gagement with the loweiI surface of the lower sleeve 14, renders it possible for the spindle-support 11 and said sleeves to be withdrawn -froin the bushing l2 together, 5 when disassembling the bearing, as well as reintroducing said parts in assembling, which is a. great convenience.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is:

l. A spindle step-bearing, comprising in combination, a bushing having a groove on its inner surface, a rotary spindle whose lower end extends into said bushing conoci,- ti'ically, a solid supportingbody dctachabiy secured to the lower end ot' said spindle within said bushing, said supporting-body having a tilleted expansion near its top, an annular element having a raceway located loosely about said supporting-body below its i'accway and .supporting said lilleted expansion, means for preventing the rotation of said element consisting of a projection on the i-aceway element extending therefrom iiiovably into said groove in said bushing, and means for resiliently upholding said element. t

C) A spindle step-bearing, coniprisin n (l7 combination, a hollow bushing, a spinldla ro` tat-able therein and spaced away therefrom, ,a spindle-support therein detachably-engaged therewith to rotate therewith, said support having an vannular expansion eoiicentric with said spindle, also a concentric depending stem, a raeeway sleeve about and spaced away from the said stem, anti-friction balls in said raceway supporting said' annular expansion, a vertically-zul)ustable tilleted expansion, anti-friction balls in said iii 972,743 V l l supporting-body for said spindle having a depending stem movable in the hollow of said bushing and extending into the hollow of said nut, a sleeve about said stem and upheld by said nut, resilient means -inter. posed between said sleeve and said supporting body to resilieiitly and.` yielding'ly support the latter to obviate lsidewise oscillations thereof, and a washer removably secured `on the lower end of the stein of said sup-v portin sleeve.

4. A spindle step-bearing, comprising "in combination, a hollow bushing, a 'rotary spindle dipping thereinto, a hollow nut' seated adjustably in the lower end 4of said bushing', a supporting-body for said spindle having a soliddepending stem movable in the hollow of said bushing and extending into the hollow of said nut, a sleeve seated loosely about said stem and 'supported on said nut between it and the said supporting body, anti-friction means loca ed between said supporting-body and` saidv sleeve, and engaging-means removably securey Ito the lower end of tlie stem of said supporting body below the lowerend of said sleeve.

5. A ,spindlel step-bearing, comprising in combination, a hollow'bushing, a spindle ro# tatable therein and spaced away therefrom, a spindle-support -tliereiii'-detachably en? gaged with the spindlefend vto rotate there# with, said support having a tlleted 'expansion and a depending st'eni'concent'ric with said spindle, a raceway sleeve about/and spaced away from said stem', anti-friction means in said raeeway` supporting said llleted expansion, a- `vertically-adjustable sleeve about said stein` and spaced aparty therefrom, and resilient means yeldingly seated between saidv sleeves and engaged therewith.

Signed at VVaterlo, Iowa, this 11thy day otl June, 1909.

g-bodybelow the lower surface ofA said 60 nANinL N. WILD.

- \\"il1iesses:

G. C. KnNNEDY, O. D. YOUNG. 

